Adhesive applying mechanism for use in carpet making machines



Jan. 21, 1947.

H. P. FARIS ETAL ,728

ADHESIVE APPLYING IIECHANISN FOR USE IN CARPET IAKING MACHINES Origin al Filed Oct. 28, 1940 4 Shuts-Shoot 1 EMT -Hllllnlfilfillllflll @IMIIILH I l l ll fll ma .m io||||m|||m|||i12-1-: 2:1: |||||||1- Ill ||o|| v m- INVENTORS HAROLD P. FARIS By JOHN E. wane MM M11 ATTORNEYS Jan. 21, 1947.

"H. P. FARIS arm. ,728 ADHESIVE APPLYING MECHANISM FOR USE IN CARPET MAKING MACHINES Original Filed Oct. 28, 1940 4 Sheets-Sheet 2 INVENTORS HAROLD P. FARIS y JOHN.E.WHITE ATTOR N EYS Jan. 21, 1947.

H. PLFARIS ETAL ADHESIVE APPLYING MECHANISM FOR USE IN CARPET MAKING MACHINES Original Filed Oct. 28. 1940 4 Sheds-Sheet 3 nvvmroxs HAROLD P. PARIS BY JOHN ewnns ATI'O RN EYS FIG];

Jan. 21, 1947. I P. FARIs m-AL 2,414,728 ADHESIVE APPLYING MECHANISM FOR USE IN CARPET MAKING MACHINES ori inal Filed Oct. 28, 1940 4 Sheets-Sheet 4 INVENTORS HAROLD PLFARIS 8 Joan E.WH|TE ATTO RN EYS Patented Jan. 21, 1947 ADIIESIVE APPLYING MECHANISM FOR USE IN CARPET MAKING MACHINES Harold P. Faris, Philadelphia,

White, Trenton, N. Automotive Fibres,

'poration of Delaware Original 363,196. 1943, Serial No.

8' Claims.

This invention relates generally to carpet making machines for manufacturing carpet of the type disclosed in United States Patent No.

, the type mentioned wherein a trough for the adhesive substance is provided at the discharge Divided and Pa.., and John E. assignors to National Inc., Detroit, Mich., a corapplication October 28, 1940, Serial No. this application April 24. 484,432

Figure 2 is a vertical longitudinal sectional view through the adhesive applying mechanism;

Figure 3 is a fragmentary top plan view of the structure shown in Figure 2;

Figure 4 is a fragmentary end view of the structure illustrated in Figure 2;

Figure 5 is a detail view of the wiper blade and associated parts;

Figure 6 is an end view of the structure illustrated in Figure 4;

Figure 7 is a diagrammatic vertical longitudinal sectional view through apart of our'adhesive applying mechanism;

Figure 8 is a fragmentary elevational view of the hopper and actuating means for the closure V for the discharge opening thereof;

opening thereof with adjustable closure means v for regulating {the amount of adhesive substance I discharged from said opening onto the carpet material. Preferably the amount of adhesive substance discharged from the trough is determined in accordance with the rate of advance of the carpet material and the thickness of the adhesive layer desired thereon.

Another object is to provide an adhesive ap-- plying mechanism having adjustable means for determining the width to which the adhesive substance may be applied to the carpet material.

Another object'is to provide an adhesive applying mechanism which is capable of being adjusted along the path of the carpet material to position the doctor blade of such mechanism at the point where the advancing carpet material has little or no vibration, so that the doctor blade will produce a substantially uniform and even layer of adhesive substance on the carpet material.

Another object is to provide an adhesive applying mechanism wherein the doctor blade is adjustable vertically relative to the advancing carpet material so as to vary the thickness of the layer of adhesive produced thereby.

Another object is to provide an adhesive applying mechanism that is simple in construction, economical to manufacture, easy to install and efiicient in operation.

Other objects, advantages and novel details of construction of this invention will be made more apparent as this description proceeds, especially when considered in connection with the accompanying drawings, wherein:

Figure 1 is a side elevation of a machine including an adhesive applying mechanism embodying our invention; l

Figure 9 is a vertical sectional view taken substantially on the line 9-9 of Figure 8.

Referring now to the drawings, A is an adhesive applying mechanism embodying our invention and constituting a part of a machine illustrated of the cemented pile type.

As shown in Figure 1 the carpet material "I, such as burlap covered rubber, is advanced through the machine with the burlap side theretary beaters 15 which vibrate the carpet material after the adhesive substance is applied to the upper surface thereof. Cut fibers such as cut hair or the like are distributed from suitable means (not shown) onto the adhesive coating as the carpet material is vibrated by the beaters so that such fibers will be imbedded in the adhesive coating to form the cemented pile carpet.

Preferably the adhesive applying mechanism A has a trough 2ll adapted to receive an adhesive substance or cement from a tank 2| and having a discharge opening 22 through which such adhesive substance may flow onto the upper surface of the advancing carpet material Ill, and a doctor blade 24 engageable with the deposited adhesive substance 25 and adapted to determine the spread of the adhesive substance upon the upper surface of the carpet material 10 for subsequent engagement by the cut fibers aforesaid.

generally in Figure 1 for manufacturing carpet mally the doctor blade Such 40 fixed to the closure element 29, links Cooperating with the doctor blade 24 is a roll 24 which is preferably true cylindrical form to cooperate with the doctor blade 24 in governing the thickness of adhesive substance spread on the carpet material It as it advances beneath the doctor blade 24. Norto this roll 25 so that the spread of the adhesive substance 25 will be uniform, however, the doctor blade 24 may readily be adjusted vertically relative to the roll 25 terial.

discharged from the opening 22 in the trough 2|! onto the carpet material It is determined in ac-- made of steel and is of f to vary the thickness of the spread of adhesive substance on the carpet ma- 24 is held in fixed relation form and even layer of adhesive 4 carpet material. In thifl substance on the connection it will be appreciated that the carpet material I4 is tensioned or under tension as it is advanced. hence it will have a natural tendency to vibrate at some points. Accordingly, when the carpet material I is under certain conditions of a ofadhesive substance at a point'of maximum cordance with the rate of advance of the carpet 1 material and the thickness of the spread. desired. discharge opening 22 is in one side 28 of the trough at the bottom thereof and is controlled by an adjustable closure element 29 which is preferably hingedly mounted at 30 upon the outer side ofthe trough 20.

For adjusting the'closure element 29 we have provided an adjusting screw 3| threadedly engaging a bracket 32 on the outer side of the trough 20 and having at its outer end a knurled head 33 by which it may be manipulated, a sleeve 34 threadedly engaging the screw 3|, a rod 35 mounted to turn in brackets 35 on the trough, a lever 31 fixed to the rod 35, a link 38 terminally connected to the lever 31 and sleeve levers 39 fixed to the rod 35. bifurcated levers 4| and 42 respectively pivotally connected to the bifurcated levers 39 and 40, threaded rods 43 extends 34, bifurcated ing loosely through brackets 44 on the trough and terminally connected to the links 4| and 42, and coilsprings 45 on the rods 43 between the links 42 and "brackets 44. Thus, rotation of theadju'sting screw 3| will cause the sleeve 34 to beadjusted lengthwise of said screw 3| and thereby cause the rod to be turned by the intermediate-link 38 and lever 31. 'Such turning movement of the rod 35 will cause the bifurcatedlevers 39 to move the links, rods 43, links 42 and levers to thereby swing the closure element 29 about its pivot 30 relative to the discharge opening 22 'of the trough for regulating the amount of adhesive substance to be discharged from said opening 22 onto the carpet material '45 tend to move the links it. The coil springs 42 and levers 40 downwardly and to move the closure element 23 toward closed position. However, by suitably adjusting the screw 3| the closure element 29 may be moved to any suitable position relative to the discharge opening 22 in the trough to regulate the amount of adhesive substance discharged therefrom.

In Figures 7 and 9 respectively we have indicated by dotted lines one open position of the closure element 23, however such closure element may be adjusted to various "other positions, as desired. Thus, with this construction it is possible to provide for a flow of adhesive substance from the trough 20 onto the carpet material III which may be continued without operator manip-' ulation for an extended period.

In the present instance the roll 25, doctor blade 24, trough 20 and associated parts are mounted upon a carriage that is adjustable along the path of the carpet material l0 so that the doctor blade 24 and roll 25 may be positioned at a point where the advancing carpet material It has little or no vibrationto produce a substantially uniside thereof uppermost advances over the plate '3 adapted to tension in and stance to be spread unevenly. To" avoid this during operation of the machin ,the tension of the carpet material III is adjusted to the desired amount and then the carriage 54 is adjusted back and forth along the path of the carpet material until the point of least in place so that the cooperating doctor blade 24 and roll 25 will function with uniformity of spread in mind. To accomplishthis the carriage 50 is adjustable along a frame member 5| of the machine and has journaled thereon a shaft '52. carrying pinions 53 meshing with racks 54 fixed to the frame of the machine. Any suitable means such as a crank 55 may be employed at one endofthe shaft 52 to rotate the pinions 53 relative to the racks 54 to cause the carriage 50 to move back and forth as aforesaid.

, Before reaching the doctor blade 24 the upper surface of the carpet material It is engaged by the tip 50 of a suitable wiper blade 5| mounted upon the carriage 50. A supporting plate 52 for in shape to the adjacent surface of the doctorblade 24. Such side plates 55 may beformed of any suitable material such as Bakelite and are determine the width to which the adhesive substance discharged from the trough 24 may be applied to the carpet material l0.

In use, the carpet material "I with the burlap 62 and is wiped by the tip 50 of the blade 5| before the adhesive substance is deposited upon said material from the trough 25. The 'amount of adhesive substance discharged from the trough '20 onto'the carpet material It is controlled by the closure element 29 and associated parts, and the width of application is determined by the side plates 55. The doctor blade 24 determines the spreadand thickness of the adhesive substance on the upper side of the carpet material III as the latter advances by it. Thus, the desired adhesive coating .or layer on the carpet material I0 is obtained before the carpet material reaches the rotary beaters |5 which vibrate said material a as the cut fibers (not shown) are distributed onto the adhesive coating to be imbedded endwise therein in the, usual manner to form the cemented pile carpet.

, What we claim as our invention is:

l. Mechanism for applying an adhesive substance to the upper surface of advancing sheet material, comprising a roll for supporting the ,advancing' material, means for I dischargine adtension the. I doctor blade 24 might be gaugin the spread vibration of'the carpetmaterial and therefore might cause the adhesive subvibration in the carpet material is found. The carriage 5|! is then held hesive substance onto the advancing material before it reaches said roll, a doctor blade engageable with the adhesive substance on said material when it reaches said roll to determine the spread of said substance on said material, and a carriage for said roll and blade supported for movement along the path of the advancing material to position said roll and blade at a point where the advancing "material has little or no vibration, so that the doctor blade will produce a substantially uniform and even layer or coating of adhesive substance on said material as it passes over said roll.

2. Mechanism for applying an adhesive substance to the upper surface of advancing sheet '15 material, comprising a doctor blade engageable with adhesive substance on said material to determine the spread thereof, means for discharging adhesive substance onto said material before it reaches the doctor blade, said means including a trough supported a sufficient distance above the sheet to discharge the adhesive substance in unrestricted flow through the atmosphere to the sheet material, means for wiping the material before the, adhesive substance is deposited thereon, and means carried by one of the means aforesaid for determining the width to which the discharged adhesive substance may be applied to said material.

3.Mechanism for applying an adhesive substance to the upper'surface of advancing sheet material, comprisin adoctor blade engageable with adhesive substance on said material to determine the spread thereof, means for discharging adhesive substance onto said material before it reaches the doctor blade, said means including a trough supported a sufiicient distance above the sheet to discharge the adhesive substance in unrestricted flow through the atmosphere to the sheet material, means for wiping the material before the adhesive substance is deposited thereon, and side plates carried by the wiping means below the discharging means for determining the width to which the discharged adhesive substance may be applied to said material.

4 Mechanism for applying an adhesive substance to the upper surface of advancing sheet material, comprising a doctor blade engageable with adhesive substance on said material to determine the spread thereof, means for discharging adhesive substance onto said material before it reaches the doctor blade, said means including a trough supported a suilicient distance above the sheet to discharge the adhesive substance in unrestricted flow through theatmosphere to the sheet material, means for wiping the material before the adhesive substance is deposited thereon, and means between the wiping means and doctor blade for determining the width to which the discharged adhesive substance may be appliedto said material.

5. Mechanism for applying an adhesive substance to the upper surface of advancing sheet material, comprising means for discharging an adhesive substance onto said material, a wiper blade engageable with said material before the adhesive substance is discharged onto the same,

a doctor blade engageable with the adhesive substance after it is on the material, brackets mounted upon and adjustable transversely over the wiper blade, said bracketsextending toward said doctor blade, and side plates between the wiper blade and doctor blade mounted for both longitudinal and vertical adjustment on said brackets,

terial and having a discharge opening at the bottom thereof through which an adhesive substance may be discharged downwardly onto said surface, a doctor blade above said material and engageable with the discharged adhesive substance to determine the spread thereof upon said surface, a roll of true cylindrical form beneath said material and cooperating with said doctor blade to govern the thickness of the adhesive substance spread on said surface, and a carriage carrying the trough, doctor blade and roll and adjustable back and forth along the path of said advancing material whereby said doctor blade and roll may be positioned at a point where the advancing material has little or no vibration so that the doctor blade will produce a substantially uniform layer of adhesive substance on said material as it passes over said roll.

7. Mechanism for applying an adhesive substance to the upper surface of advancing sheet material, comprising a trough above said. material and having a discharge opening at the bottom thereof through which an adhesive substance may be discharged downwardly onto said surface, a doctor blade above said material and engageable with the discharged adhesive substance to determine the spread thereof upon said surface, a roll of true cylindrical form beneath said. material and cooperating with said doctor blade to govern the thickness of the adhesive substance spread on said surface, a carriage carrying the doctor blade and roll and adjustable back and forth along the path of said advancing material whereby said doctor blade and roll may be positioned at a point where the advancing material has little or no vibration so that the doctor blade will produce a substantially uniform layer of adhesive substance on said material as it passes over said roll, a wiper blade mounted on said carriage and engageable with said surface in ad- 'vance of said doctor blade, and a supporting plate for said advancing material located beneath said material and adjustably connected to said carriage so as to be adjustable relative to said wiper blade.

8. Mechanism for applying an adhesive substance to the uppersurface of advancing sheet material, comprising means for discharging an adhesive substance onto said material, said means including a trough above said material and having a discharge opening at the bottom thereof through which an adhesive substance may be discharged downwardly onto said surface, a docing of true cylindrical form to cooperate with the doctor blade to govern the thickness of the adhesive substance spread on said material. and

a common carrier for said roll and doctor blade supported for movement back and forth along the path of the advancing material to position said roll and'blade at a point where the advancing material has little or no vibration,'so that the doctor blade will produce a substantially uniform layer of adhesive substance on said material.

HAROLD P. 'FARIS. JOHN 

